Chemistry - Electrochemistry Question with Solution | TestHub

(A) E°cell = 0.77 − (−0.76) = 1.53 V.
E° positive ⇒ ΔG° negative, reaction spontaneous.
Match: 1, 3

(B) E°cell = 0.80 − (−0.73) = 1.53 V.
Hence correct standard EMF 1.53 V.
Match: 1

(C) For reaction 2H⁺ + Sn → H₂ + Sn²⁺.
ΔG° = −25090 J, so reaction spontaneous.
Match: 4

(D) E°cell = 0.80 − 0.54 = 0.26 V.
Positive EMF ⇒ ΔG° negative.
Match: 2, 4